jpeg2yuv(1) [debian man page]
jpeg2yuv(1) MJPEG tools manual jpeg2yuv(1) NAME
jpeg2yuv - Convert jpeg images to the yuv format. SYNOPSIS
jpeg2yuv [-b num] [-f num] [-I num] [-A ratio] [-L num] [-n num] [-l num] [-j filename] DESCRIPTION
jpeg2yuv decompresses a sequence of JPEG files and pipes the image data to stdout as a YUV4MPEG2 stream. Any JPEG format supported by lib- jpeg can be read. stdout will be filled with the YUV4MPEG2 movie data stream, so be prepared to pipe it on to mpeg2enc or to write it into a file. OPTIONS
jpeg2yuv accepts the following options: -b num Frame offset: skip output of the first 'num' frames. (default: 0) -f num Set the frame rate of stream accepts the same numbers. No default, this option has to be specified. -A ratio Sample aspect ratio. Default is square pixels (1:1) -I num interlacing mode: p = none / progressive t = top field first b = bottom field first No default, this option has to be specified. -L num 0 = non-interlaced (two successive fields per JPEG file) 1 = interlaced fields -l num Specifies the number of loops (default: 0 loops ) When this option is not used the given range of images is only processed once. If you use this option with num of -1 jpeg2yuv will loop forever writing the image to stdout. When you use n > 0 it will loop n-times till it finishes. -n num Specifies the number of frames to process. (default: all = -1) -j {1}%{2}d{3} Read JPEG frames with the name components as follows: {1} JPEG filename prefix (e g: picture_ ) {2} Counting placeholder (like in C, printf, eg 06 )) {3} File extension. Something like this: .jpg A correct description of the files could look like this: picture_%06d.jpg If this option is omited, the filenames are read from stdin. For example: $ls *jpg | jpeg2yuv -f 25 -I p > result.yuv -R 1 or 0 rescale YUV color values from 0-255 to 16-235 (default: 1) -v num Verbosity level (0, 1 or 2) BUGS
The frame rate description seems not to be up to date. The NTSC integer ratios seem not to be supported. As a workaround specify a PAL (25) or FILM (24) and set the right frame rate in mpeg2enc with the -F option. AUTHOR
This man page was written by Bernhard Praschinger. If you have questions, remarks, problems or you just want to contact the developers, the main mailing list for the MJPEG-tools is: mjpeg-users@lists.sourceforge.net For more info, see our website at http://mjpeg.sourceforge.net SEE ALSO
mjpegtools(1), mpeg2enc(1), ppmtoy4m(1), yuv2lav(1), yuvdenoise(1), yuvmedianfilter(1), yuvscaler(1) MJPEG Linux Square 8 December 2001 jpeg2yuv(1)
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jpeg2yuv(1) MJPEG tools manual jpeg2yuv(1) NAME
jpeg2yuv - Convert jpeg images to the yuv format. SYNOPSIS
jpeg2yuv [-b num] [-f num] [-I num] [-A ratio] [-L num] [-n num] [-l num] [-j filename] DESCRIPTION
jpeg2yuv decompresses a sequence of JPEG files and pipes the image data to stdout as a YUV4MPEG2 stream. Any JPEG format supported by lib- jpeg can be read. stdout will be filled with the YUV4MPEG2 movie data stream, so be prepared to pipe it on to mpeg2enc or to write it into a file. OPTIONS
jpeg2yuv accepts the following options: -b num Frame offset: skip output of the first 'num' frames. (default: 0) -f num Set the frame rate of stream accepts the same numbers. No default, this option has to be specified. -A ratio Sample aspect ratio. Default is square pixels (1:1) -I num interlacing mode: p = none / progressive t = top field first b = bottom field first No default, this option has to be specified. -L num 0 = non-interlaced (two successive fields per JPEG file) 1 = interlaced fields -l num Specifies the number of loops (default: 0 loops ) When this option is not used the given range of images is only processed once. If you use this option with num of -1 jpeg2yuv will loop forever writing the image to stdout. When you use n > 0 it will loop n-times till it finishes. -n num Specifies the number of frames to process. (default: all = -1) -j {1}%{2}d{3} Read JPEG frames with the name components as follows: {1} JPEG filename prefix (e g: picture_ ) {2} Counting placeholder (like in C, printf, eg 06 )) {3} File extension. Something like this: .jpg A correct description of the files could look like this: picture_%06d.jpg If this option is omited, the filenames are read from stdin. For example: $ls *jpg | jpeg2yuv -f 25 -I p > result.yuv -R 1 or 0 rescale YUV color values from 0-255 to 16-235 (default: 1) -v num Verbosity level (0, 1 or 2) BUGS
The frame rate description seems not to be up to date. The NTSC integer ratios seem not to be supported. As a workaround specify a PAL (25) or FILM (24) and set the right frame rate in mpeg2enc with the -F option. AUTHOR
This man page was written by Bernhard Praschinger. If you have questions, remarks, problems or you just want to contact the developers, the main mailing list for the MJPEG-tools is: mjpeg-users@lists.sourceforge.net For more info, see our website at http://mjpeg.sourceforge.net SEE ALSO
mjpegtools(1), mpeg2enc(1), ppmtoy4m(1), yuv2lav(1), yuvdenoise(1), yuvmedianfilter(1), yuvscaler(1) MJPEG Linux Square 8 December 2001 jpeg2yuv(1)